@article{CMUC_1967__8_2_a1,
     author = {Havel, V\'aclav},
     title = {Coordinatization of parallel systems. {II.}},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {199--208},
     publisher = {mathdoc},
     volume = {08},
     number = {2},
     year = {1967},
     mrnumber = {0217682},
     zbl = {0161.40202},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1967__8_2_a1/}
}